Updating CHANGES.txt for moving entry of HDFS-8332 from branch-2 to trunk

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -330,6 +330,8 @@ Trunk (Unreleased)
     HDFS-7673. synthetic load generator docs give incorrect/incomplete commands
     (Brahma Reddy Battula via aw)
 
+    HDFS-8332. DFS client API calls should check filesystem closed (Rakesh R via umamahesh)
+
 Release 2.8.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES
@@ -711,8 +713,6 @@ Release 2.8.0 - UNRELEASED
     HDFS-6291. FSImage may be left unclosed in BootstrapStandby#doRun()
     (Sanghyun Yun via vinayakumarb)
 
-    HDFS-8332. DFS client API calls should check filesystem closed (Rakesh R via umamahesh)
-
     HDFS-7998. HDFS Federation : Command mentioned to add a NN to existing
     federated cluster is wrong (Ajith S via vinayakumarb)